Transcript

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009 1

Workflow on the GRIDs surface

• GRIDs ‘surface’ provides – Computational capabilities of GRID– Information presentation capabilities

of WWW– Information management capabilities

• But not yet environment for workflow

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009 2

The GRIDs Architecture

Knowledge Layer

Information Layer

Computation / Data LayerDat

a to

Kno

wle

dge

Control

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009 3

The GRIDs Architecture

Dat

a to

Kno

wle

dge

Control

Par

ticl

e P

hysi

cs A

ppli

cati

on

Gen

omic

s A

ppli

cati

on

Env

iron

men

tal A

ppli

cati

on

E-B

usin

ess

App

lica

tion

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009 4

A POSSIBLE ARCHITECTURE

U:USER

S:SOURCE R:RESOURCE

Rm:ResourceMetadata

Ra:ResourceAgent

Ua:User Agent

Um:User Metadata

Sm:SourceMetadata

Sa:Source Agent brokers

The GRIDs Environment

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009 5

A Brief History of GRIDs

• 1G: custom-made architecture machines to user– Pioneering metacomputing

• 2G: proprietary standards and interfaces– I-WAY GLOBUS, UNICORE, CONDOR, LEGION

AVAKI

• 2.5G: added in FTP, SRB, LDAP, AccessGRID• 3G: adopted W3C concepts for open interfaces –

OGSA / OGSI: note especially OGSA/DAI– But built on 2.G foundations

e-ScienceApps

e-ScienceR&D

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009 6

But…..

• This comes nowhere near the requirements as originally defined for GRIDs

• Too low-level (programmer not end-user level)– Insufficient representativity– Insufficient expressivity– Insufficient resilience– Insufficient dynamic flexibility

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009 7

Services: Challenges 1

DescriptionLocationRequirements

matchingComposingUtilising

metadata

Functional Program

Code(to deliver the service)

Service description(descriptive metadata)

InputParameterdefinitions

OutputParameterdefinitions

Restrictions on use of service(restrictive metadata)

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009 8

Services: Challenges 2

Composition End-to-end FR

satisfaction End-to-end NFRs

satisfaction Avoiding emergent

properties Conditions of use of

services Processes wrapped with data wrapped with

processing, storage etc wrapped with real

estate wrapped with staff

MultipleInstancesParallelexecution

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009 9

e-,i-,k-infrastructure

serverserver server server

detectors

e-

i-

k- Deduction & induction – human or machine

Physical

Information

Systems

server

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009

10

Middleware – and as SOKUs

e-

i-

k-

Lower middleware(hides physical heterogeneity)

Upper middleware(hides syntactic heterogeneity)

K- upper middleware(resolves semantic heterogeneity)

K- lower middleware(presents declared semantics)

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009

11

Workflow on the GRIDs Surface

• Nirvana is– GRIDs ‘surface’

• Providing computation, information presentation and information management

– Plus Self* resilience– Plus capabilities to support workflow

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009

12

Overall : The Way Forward

SCIENTIFIC DATASETS

Data

Information

Knowledge

PUBLICATIONS

Data

Information

Knowledge

CRIS

Management of Research

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009

13

PUBLICATIONS

Data

Information

Knowledge

Overall : The Way Forward

Digital Curation Facility

SCIENTIFIC DATASETS

Data

Information

Knowledge

CRIS

Management of ResearchCDR

(CERIF)

Portal with knowledge-assisted user interface

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009

14

Overall : The Way Forward

Digital Curation Facility

SCIENTIFIC DATASETS

Data

Information

Knowledge

PUBLICATIONS

Data

Information

Knowledge metadata

Portal with knowledge-assisted user interface

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009

15

Overall : The Way Forward

Digital Curation Facility

SCIENTIFIC DATASETS

Data

Information

Knowledge

PUBLICATIONS

Data

Information

Knowledge metadata

publish

validate

Portal with knowledge-assisted user interface

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009

16

Overall : The Way Forward

Digital Curation Facility

SCIENTIFIC DATASETS

Data

Information

Knowledge

PUBLICATIONS

Data

Information

Knowledge metadata

publish

validate

GRIDs

Portal with knowledge-assisted user interface

Ambient, Pervasive Access

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009

17

Overall : The Way Forward

Portal with knowledge-assisted user interface

Digital Curation Facility

SCIENTIFIC DATASETS

Data

Information

Knowledge

PUBLICATIONS

Data

Information

Knowledge metadata

publish

validate

GRIDs

Ambient, Pervasive Access

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009

18

Overall : The Way Forward

Portal with knowledge-assisted user interface

Digital Curation Facility

SCIENTIFIC DATASETS

Data

Information

Knowledge

PUBLICATIONS

Data

Information

Knowledge metadata

publish

validate

GRIDs

Ambient, Pervasive Access

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009

19

Overall : The Way Forward

Portal with knowledge-assisted user interface

Digital Curation Facility

SCIENTIFIC DATASETS

Data

Information

Knowledge

PUBLICATIONS

Data

Information

Knowledge metadata

publish

validate

GRIDs

Ambient, Pervasive Access

©euroCRIS/Keith G Jeffery CRIS: Stakeholders, Benefits, History, Process, Architecture

20081009

20

Three Steps to Nirvana

Complete Process ICT Support

Metadata and Data Exchange Standards

Workflow on the GRIDs Surface

The Perfect CRIS


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